Wimer, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 41.3 °F (low) to 68.5 °F (high). Annual precipitation averages 35.2 Inches. Wimer is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.8 °F | 48.7 °F | 5.82 in. |
| February | 33.5 °F | 54.5 °F | 4.11 in. |
| March | 35.4 °F | 59.4 °F | 4.22 in. |
| April | 38.6 °F | 65.1 °F | 3.03 in. |
| May | 43.9 °F | 74.0 °F | 1.75 in. |
| June | 48.7 °F | 81.4 °F | 0.81 in. |
| July | 54.0 °F | 91.2 °F | 0.27 in. |
| August | 52.8 °F | 91.1 °F | 0.26 in. |
| September | 46.9 °F | 84.4 °F | 0.7 in. |
| October | 39.9 °F | 70.6 °F | 2.27 in. |
| November | 36.3 °F | 54.8 °F | 5.05 in. |
| December | 32.8 °F | 46.8 °F | 6.93 in. |
| Annual | 41.3 °F | 68.5 °F | 35.22 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |